CN203362380U - Hermetic sealing device with external power for hydraulic turbine generator - Google Patents
Hermetic sealing device with external power for hydraulic turbine generator Download PDFInfo
- Publication number
- CN203362380U CN203362380U CN2013204631297U CN201320463129U CN203362380U CN 203362380 U CN203362380 U CN 203362380U CN 2013204631297 U CN2013204631297 U CN 2013204631297U CN 201320463129 U CN201320463129 U CN 201320463129U CN 203362380 U CN203362380 U CN 203362380U
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- sealing cover
- oil
- hermetic sealing
- turbine generator
- hydraulic turbine
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The utility model discloses a hermetic sealing device with external power for a hydraulic turbine generator. The hermetic sealing device comprises an upper hermetic sealing cover (1) and a lower hermetic sealing cover (2), wherein three labyrinth seals (4) are axially arranged between the upper hermetic sealing cover (1) and the lower hermetic sealing cover (2), between the upper hermetic sealing cover (1) and a sliding rotor (3), and between the lower hermetic sealing cover (2) and the sliding rotor (3); a cavity is formed between every two adjacent labyrinth seals (4); a gas outlet collection cavity (6) adjacent to the inner side of an oil tank is connected with an oil-mist separating-filtering device (9) through a gas outlet pipe (8); a gas inlet high-pressure cavity (7) far away from the inner side of the oil tank is connected with a high-pressure gas source through a gas inlet pipe (10). The hermetic sealing device has the beneficial effects of effectively solving the problem of 'oil mist leakage'of a hydraulic turbine generator set, greatly overcoming the defect of insufficient hermetic sealing power of hydraulic turbine generator sets with medium and low rotation speeds, and being simple in manufacturing technology, low in cost, convenient to install and maintain and high in practicability; the utilization rate of the device is improved and the structure of the device is simplified.
Description
Technical field
The utility model relates to generator sealing configuration technical field, the particularly gas sealing mechanism of hydraulic turbine generator additionaling power.
Background technique
" mist of oil leaks " of bearing of hydraulic generator is more common in hydraulic turbine generator, and " mist of oil leaks " is one and up to the present fails the problem thoroughly solved." mist of oil leaks " is mainly manifested in two aspects: by the gap between thrust collar inner chamber gear oil pipe and rotating shaft, overflowed on the one hand, flow to generator amature, pollute rotor magnetic pole and generator unit stator, when serious, air cooling device, stator coil and Generator hole are all by oil contamination, and even fluid flow to turbine chamber; Fluid in the thrust-bearing fuel tank, is attached on collector ring of generator and carbon brush holder from bearing oil sealing cap top ease oil with the form of " oily vapour " on the other hand, and is gathered in the upper spider top guide bearing and covers.If oily overheap on generator stator and rotor surface or collector ring carbon brush holder, can affect insulation against ground and the heat radiation of unit, accelerate the aging of insulation, shorten the working life of generator, increase operation, the maintenance cost of equipment, totally unfavorable to unit safety.
Hydraulic turbine generator prevents that the main device adopted of bearing " mist of oil leaks " from having contact seal, three kinds of oil mist remover and common air-tight structures are set: contact seal is by adopting spring and high molecular abrasion-proof Stamping Steel Ribbon can guarantee to have in a short time the good contact of Stamping Steel Ribbon and rotation surface, thereby play good oil mist prevention effect, but due to the wearing and tearing of Sealing and the inefficacy of spring, can run down after long-time running.But though the oil mist remover long term, the structure relative complex, and also need ABAP Adapter and corresponding control apparatus, cost is higher.Common hermetic seal type bearing adopts the mist of oil produced in the blast band bearing running in the circulation of generator wind path, but its applicable high rotating speed unit only, in, the slow-speed of revolution is due to the blast deficiency, still can't solve " mist of oil leaks " problem of bearing.。
The model utility content
The purpose of this utility model is to overcome the shortcoming of prior art, provide a kind of effective solution hydraulic turbine generator group mist of oil leak a difficult problem, manufacturing process is simple, installation and maintenance are convenient, improve the gas sealing mechanism of hydraulic turbine generator additionaling power of the utilization ratio of equipment.
The purpose of this utility model is achieved through the following technical solutions: the gas sealing mechanism of hydraulic turbine generator additionaling power, it comprises and being arranged on oil sump, the upper air sealing cover at lower two ends and lower air sealing cover, upper air sealing cover and lower air sealing cover are tightly connected with oil sump upper end cap and oil sump lower end cap respectively, between upper air sealing cover and slide rotor, all be provided with vertically three road labyrinth seals between lower air sealing cover and slide rotor, all be provided with vertically two-layer sealing copper ring between per pass labyrinth seal and slide rotor, form sealing between copper ring and slide rotor, form cavity between adjacent two labyrinth seals, cavity near the oil sump inboard is the collection cavity of giving vent to anger, cavity away from the oil sump inboard is the air inlet hyperbaric chamber, the collection cavity of giving vent to anger connects the mist of oil separating and filtering device by steam outlet pipe, the air inlet hyperbaric chamber connects high-pressure air source by suction tude.
Also be connected with the oil extraction mist pipe that is communicated with upper air sealing cover inner chamber body on described upper air sealing cover, oil extraction mist pipe connects the mist of oil separating and filtering device.
Described suction tude, steam outlet pipe and oil extraction mist pipe are formed by connecting by the more piece pipeline, and the pipeline A that directly connects upper air sealing cover and lower air sealing cover is connected with other pipelines by insulating joint.
The high pressure air cavity that described high-pressure air source is hydraulic turbine generator, the air inducing hole arranged on the barge board of suction tude by flange and high pressure air cavity is connected.
Described high-pressure air source is blower fan, and suction tude is connected with the exhaust outlet of blower fan.
The utlity model has following advantage: the utility model can effectively solve the difficult problem of hydraulic turbine generator group " mist of oil leaks ", in greatly improving, the problem that is short of power of low speed water generator group hermetic seal.
The utility model manufacturing process is simple, cost is low, installation and maintenance are convenient, practical.
The utility model by Pneumatic pipe cleaner cross suction tude by the air inlet hyperbaric chamber to the collection cavity force feed of giving vent to anger, reduced pressure reduction in upper and lower air sealing cover and oil sump, stoped " oily vapour " to excessive, thereby the sealing gland of realization can be guaranteed the not outside seepage mist of oil in upper and lower air sealing cover sound contact position.
The utility model takes full advantage of the blast of additional blower fan generation and the blast of machine group rotor self rotation generation stops " oily vapour " excessive, has improved the utilization ratio of equipment, has simplified apparatus structure.
The utility model in, the air-tight structure of slow-speed of revolution unit additionaling power researches and develops design, optimized conventional structure, in having solved, the difficult problem of low speed water turbine generator " mist of oil leaks ", sealing effect is further enhanced.
The accompanying drawing explanation
Fig. 1 is structural representation of the present utility model
The structural representation that Fig. 2 is labyrinth seal of the present utility model
The structural representation that the high pressure air cavity that Fig. 3 is hydraulic turbine generator of the present utility model is high-pressure air source
In figure, the upper air sealing cover of 1-, air sealing cover under 2-, the 3-slide rotor, 4-labyrinth seal, 5-copper ring, the 6-collection cavity of giving vent to anger, 7-air inlet hyperbaric chamber, 8-steam outlet pipe, 9-mist of oil separating and filtering device, 10-suction tude, 11-oil extraction mist pipe, the 12-insulating joint, 13-high pressure air cavity, 14-barge board, 15-generator unit stator.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described, protection domain of the present utility model is not limited to the following stated:
As shown in Figure 1, the gas sealing mechanism of hydraulic turbine generator additionaling power, it comprises and being arranged on oil sump, the upper air sealing cover 1 at lower two ends and lower air sealing cover 2, upper air sealing cover 1 and lower air sealing cover 2 are tightly connected with oil sump upper end cap and oil sump lower end cap respectively, as shown in Figure 2, between upper air sealing cover 1 and slide rotor 3, all be provided with vertically three road labyrinth seals 4 between lower air sealing cover 2 and slide rotor 3, all be provided with vertically two-layer sealing copper ring 5 between per pass labyrinth seal 4 and slide rotor 3, 3 of copper ring 5 and slide rotors form sealing, 4 of adjacent two labyrinth seals form cavity, cavity near the oil sump inboard is the collection cavity 6 of giving vent to anger, cavity away from the oil sump inboard is air inlet hyperbaric chamber 7, the collection cavity 6 of giving vent to anger connects mist of oil separating and filtering device 9 by steam outlet pipe 8, mist of oil flow to after filtering oil storage tank and uses, air inlet hyperbaric chamber 7 connects high-pressure air source by suction tude 10.
Also be connected with the oil extraction mist pipe 11 that is communicated with upper air sealing cover 1 inner chamber body on described upper air sealing cover 1, oil extraction mist pipe 11 connects mist of oil separating and filtering device 9.
Described suction tude 10, steam outlet pipe 8 and oil extraction mist pipe 11 are formed by connecting by the more piece pipeline, and the pipeline A that directly connects upper air sealing cover 1 and lower air sealing cover 2 is connected with other pipelines by insulating joint 12.
As shown in Figure 3, the high pressure air cavity 13 that described high-pressure air source is hydraulic turbine generator, suction tude 10 is connected by the air inducing hole arranged on the barge board 14 of flange and high pressure air cavity 13.
The blower fan that described high-pressure air source is mist of oil separating and filtering device 9, suction tude 10 is connected with the exhaust outlet of blower fan.
The utility model is simple in structure, with low cost, be convenient to processing and be easy to assembled in situ.The key sealing position of air sealing cover adopts three road labyrinth seals 4, and form two cavitys, per pass labyrinth seal 4 all is embedded with double-layer seal copper ring 5, and copper ring 5 forms effective sealing by essence with addition of work with slide rotor 3 surface of contact, can reduce the gap of sound contacting point as far as possible.
Pneumatic pipe cleaner cross suction tude 10 by air inlet hyperbaric chamber 7 to collection cavity 6 force feeds of giving vent to anger, can guarantee the not outside seepage mist of oil in upper and lower air sealing cover 2 sound contact position, reduced upper and lower air sealing cover 2 and the interior pressure reduction of oil sump, stoped " oily vapour " to excessive, thus the sealing gland of realization.
Suction tude 10 adopts Stainless Steel Tube, and suction tude 10 is provided with valve, the size of adjustable air inflow.
Mist of oil separating and filtering device 9 bodies of additionaling power are processed by Plate Welding, and inside is provided with the device for the condensation mist of oil, also are provided with mist of oil collecting pipe, blower fan, filter screen, oil storage tank, draining valve and tubulose oil ga(u)ge.For ease of observing oil level and oil extraction, this Plant arrangement is on the outer wall of machine hole.
Generator, in running, can produce a large amount of " oily vapour " in oil sump, and partly " oily vapour " can overflow from sealing surface, cause forming larger pressure difference inside and outside oil sump,
The utility model to upper and lower sealing gland lid, has reduced upper and lower air sealing cover 2 and the interior pressure reduction of oil sump by air inducing, has stoped " oily vapour " to excessive, thus the sealing gland of realization.
The air cooled hydraulic generator rotor of sealing and circulating when rotated, all can produce certain blast, with the stator and rotor that the meet generator cooling requirement of ventilating.The blast that is provided with the high rotating speed water turbine generator generation of axial flow fan for two ends of rotor can be higher, generator unit stator 15 can form high pressure air cavity 13 with the space that barge board 14 forms, as shown in Figure 3, open the air inducing hole at the correct position of barge board 14, and, by flange connect suction tude 10, suction tude 10 is divided into the hyperbaric chamber that two-way is connected to respectively upper and lower air sealing cover 2 outsides.So, the high-pressure blast that generator amature produces has stoped " oily vapour " excessive by pipeline in the mode of positive pressure, and a part of mist of oil can be pushed back to the exhaust cavity of sealing cover.
But in low, fast hydraulic generator unit, generator unit stator 15 is less with the air cavity area pressure that the space that barge board 14 forms forms, can't meet hermetic seal and get the requirement of gas, and the blower fan in the mist of oil separating and filtering device 9 of additionaling power just can increase the power that gas is got in hermetic seal, meet the requirement of hermetic seal.
The collection cavity 6 of giving vent to anger of air sealing cover inboard is provided with steam outlet pipe 8, under the air pressure equilibrium situation in taking into account air sealing cover, draws excessive " mist of oil " to additionaling power mist of oil separating and filtering device 9, and " mist of oil " flows to oil storage tank after this device separates, filters.Separately also be provided with oil extraction mist pipe 11 on the hermetic seal cage on oil sump top, can directly draw " the oily vapour " of oil sump inside, to slow down the gas pressure in bearing bore.
Sealing of the present utility model and ventilation system are closely as one, taking full advantage of the blast of additional blower fan generation and the blast of machine group rotor self rotation generation stops " oily vapour " excessive, and a small amount of oil spilling is caused in oil storage tank and stores, when the oil level in oil storage tank reach a certain height, the oil in oil storage tank can be connected to the oil extraction case.
The utility model is simple in structure, material and low cost of manufacture, and be convenient to installation and maintenance, effectively solved " mist of oil leaks " difficult problem of puzzlement hydraulic turbine generator.
Claims (5)
1. the gas sealing mechanism of hydraulic turbine generator additionaling power, it is characterized in that: it comprises and being arranged on oil sump, the upper air sealing cover (1) at lower two ends and lower air sealing cover (2), upper air sealing cover (1) and lower air sealing cover (2) are tightly connected with oil sump upper end cap and oil sump lower end cap respectively, between upper air sealing cover (1) and slide rotor (3), all be provided with vertically three road labyrinth seals (4) between lower air sealing cover (2) and slide rotor (3), all be provided with vertically two-layer sealing copper ring (5) between per pass labyrinth seal (4) and slide rotor (3), form sealing between copper ring (5) and slide rotor (3), form cavity between adjacent two labyrinth seals (4), cavity near the oil sump inboard is the collection cavity of giving vent to anger (6), cavity away from the oil sump inboard is air inlet hyperbaric chamber (7), the collection cavity (6) of giving vent to anger connects mist of oil separating and filtering device (9) by steam outlet pipe (8), air inlet hyperbaric chamber (7) connects high-pressure air source by suction tude (10).
2. the gas sealing mechanism of hydraulic turbine generator additionaling power according to claim 1, it is characterized in that: also be connected with the oil extraction mist pipe (11) that is communicated with upper air sealing cover (1) inner chamber body on described upper air sealing cover (1), oil extraction mist pipe (11) connects mist of oil separating and filtering device (9).
3. the gas sealing mechanism of hydraulic turbine generator additionaling power according to claim 1, it is characterized in that: described suction tude (10), steam outlet pipe (8) and oil extraction mist pipe (11) are formed by connecting by the more piece pipeline, and the pipeline A that directly connects upper air sealing cover (1) and lower air sealing cover (2) is connected with other pipelines by insulating joint (12).
4. the gas sealing mechanism of hydraulic turbine generator additionaling power according to claim 1, it is characterized in that: the high pressure air cavity (13) that described high-pressure air source is hydraulic turbine generator, suction tude (10) is connected with the upper air inducing hole arranged of the barge board (14) of high pressure air cavity (13) by flange.
5. the gas sealing mechanism of hydraulic turbine generator additionaling power according to claim 1, it is characterized in that: described high-pressure air source is blower fan, suction tude (10) is connected with the exhaust outlet of blower fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204631297U CN203362380U (en) | 2013-07-31 | 2013-07-31 | Hermetic sealing device with external power for hydraulic turbine generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204631297U CN203362380U (en) | 2013-07-31 | 2013-07-31 | Hermetic sealing device with external power for hydraulic turbine generator |
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| Publication Number | Publication Date |
|---|---|
| CN203362380U true CN203362380U (en) | 2013-12-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013204631297U Withdrawn - After Issue CN203362380U (en) | 2013-07-31 | 2013-07-31 | Hermetic sealing device with external power for hydraulic turbine generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203362380U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103362722A (en) * | 2013-07-31 | 2013-10-23 | 东方电气集团东风电机有限公司 | Air seal device with external power of hydrogenerator |
| CN104009578A (en) * | 2014-05-13 | 2014-08-27 | 哈尔滨电气动力装备有限公司 | High-thrust pushing-guiding integrated bearing structure of vertical type asynchronous motor |
| CN105781864A (en) * | 2016-05-10 | 2016-07-20 | 杭州林东新能源科技股份有限公司 | Tidal current energy power generation device and underwater sealing protective device thereof |
-
2013
- 2013-07-31 CN CN2013204631297U patent/CN203362380U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103362722A (en) * | 2013-07-31 | 2013-10-23 | 东方电气集团东风电机有限公司 | Air seal device with external power of hydrogenerator |
| CN103362722B (en) * | 2013-07-31 | 2015-12-23 | 东方电气集团东风电机有限公司 | The gas sealing mechanism of hydraulic turbine generator additionaling power |
| CN104009578A (en) * | 2014-05-13 | 2014-08-27 | 哈尔滨电气动力装备有限公司 | High-thrust pushing-guiding integrated bearing structure of vertical type asynchronous motor |
| CN105781864A (en) * | 2016-05-10 | 2016-07-20 | 杭州林东新能源科技股份有限公司 | Tidal current energy power generation device and underwater sealing protective device thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20131225 Effective date of abandoning: 20151223 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |